WIP: debug - hist def 01.1

benchmarks/dvmp/analysis/vm_invar.cxx

@@ -150,7 +150,7 @@ int vm_invar(const std::string& config_name)
       delete hptr_tmp;
       TCanvas* ctest = new TCanvas("ctest", "ctest", 800,600);
       h_Var1D[i][j]->Draw("hist");
-      ctest->Print(fmt::format("{}{}{}test.png", output_prefix).c_str(), i, j);
+      ctest->Print(fmt::format("{}{}{}test.png", output_prefix, i, j).c_str());
       delete ctest;
     }
   }